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C. Maximum Set A set of positive integers $S$ is called beautiful if, for every two integers $x$ and $y$ from this set, either $x$ divides $y$ or $y$ 阅读全文
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D. Serval and Shift-Shift-Shift Serval has two $n$-bit binary integer numbers $a$ and $b$. He wants to share those numbers with Toxel. Since Toxel lik 阅读全文
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The Number of Good Subsets You are given an integer array nums . We call a subset of nums good if its product can be represented as a product of one o 阅读全文
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Count the Number of Square-Free Subsets You are given a positive integer 0-indexed array nums . A subset of the array nums is square-free if the produ 阅读全文
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Handling Sum Queries After Update You are given two 0-indexed arrays nums1 and nums2 and a 2D array queries of queries. There are three types of queri 阅读全文
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D. Triangle Coloring You are given an undirected graph consisting of $n$ vertices and $n$ edges, where $n$ is divisible by $6$. Each edge has a weight 阅读全文